PCB声学传感器品牌价格美国PCBPCB传感器美国PCB传感器PCB麦克风PCB力锤PCB应力传感器PCB扭矩传感器PCB传感器线缆产品咨询主要联系人毛女士13671505969微信同号商务***:2851096294光电式传感器光电式传感器photoelectrictransducer，基于光电效应的传感器，在受到可见光照射后即产生光电效应，将光信号转换成电信号输出。它除能测量光强之外，还能利用光线的透射、遮挡、反射、干涉等测量多种物理量，如尺寸、位移、速度、温度等，因而是一种应用极广泛的重要敏感器件。光电测量时不与被测对象直接接触，光束的质量又近似为零，在测量中不存在摩擦和对被测对象几乎不施加压力。因此在许多应用场合，光电式传感器比其他传感器有明显的优越性。其缺点是在某些应用方面，光学器件和电子器件价格较贵，并且对测量的环境条件要求较高。中文名光电式传感器外文名photoelectrictransducer拼音guangdianshichuanganqi基于光电效应适用条件受到可见光照射功能测量光强等物理量目录1简介2概述3类型4应用5光电效应?外光电效应?内光电效应6光敏电阻7光敏管8光电池9耦合器件10CCD11分类12发展状况13构成特点简介编辑photoelectrictransducer概述编辑光电式传感器是将光通量转换为电量的一种传感器，光电式传感器的基础是光电转换元件的光电效应。由于光电测量方法灵活多样，可测参数众多，具有非接触，高精度，高可靠性和反应快等特点，使得光电传感器在检测和控制领域获得了广泛的应用。类型编辑光电式传感器有光电管、光电倍增管、光敏电阻、光电二极管和光电三极管、光电池、半导体色敏传感器、光电闸流晶体管、热释电传感器、光电耦合器件等光电元件。另外，光电式传感器还可分为模拟式光电式传感器和脉冲式光电式传感器两类。应用编辑光电检测方法具有精度高、反应快、非接触等优点而且可测参数多。传感器的结构简单，形式灵活多样，体积小。近年来，随着光电技术的发展，光电式传感器已成为系列产品其品种及产量日益增加。用户可根据需要选用各种规格的产品它在机电控制、计算机、国防科技等方面。光电效应编辑它是光照射到某些物质上，使该物质的导电特性发生变化的一种物理现象，可分为外光电效应和内光电效应和光生伏***应三类。外光电效应是指，在光线作用下物体内的电子逸出物体表面向外发射的物理现象。光子是以量子化“粒子”的形式对可见光波段内电磁波的描述。光子具有能量hv，h为普朗克常数，v为光频。光子通量则相应于光强。外光电效应由爱因斯坦光电效应方程描述：Ek=hν-W其中，h表示普朗克常量，ν表示入射光的频率）。当光子能量等于或大于逸出功时才能产生外光电效应。因此每一种物体都有一个对应于光电效应的光频阈值，称为红限频率。对于红限频率以上的入射光，外生光电流与光强成正比。内光电效应又分为光电导效应和光生伏***应两类。光电导效应是指，半导体材料在光照下禁带中的电子受到能量不低于禁带宽度的光子的激发而跃迁到导带，从而增加电导率的现象。能量对应于禁带宽度的光子的波长称光电导效应的临界波长。光生伏打效应是指光线作用能使半导体材料产生一定方向电动势的现象。光生伏打效应又可分为势垒效应（结光电效应）和侧向光电效应。势垒效应的机理是在金属和半导体的接触区(或在PN结)中，电子受光子的激发脱离势垒（或禁带）的束缚而产生电子空穴对，在阻挡层内电场的作用下电子移向N区外侧，空穴移向P区外侧，形成光生电动势。侧向光电效应是当光电器件敏感面受光照不均匀时，受光激发而产生的电子空穴对的浓度也不均匀，电子向未被照射部分扩散，引起光照部分带正电、未被光照部分带负电的一种现象。外光电效应光子，光子能量；光电子外光电效应是指在光线作用下，物体内的电子逸出物体表面向外发射的现象。内光电效应在光线作用下，物体的导电性能发生变化或产生光生电动势的效应光电导效应：光敏电阻、光敏二极管（晶体管）光生伏***应：光电池光敏电阻编辑无光照时，光敏电阻阻值很大，电路中电流很小；当光敏电阻受到一定波长范围的光照时，它的阻值急剧减小，电路中电流迅速增大。光敏管编辑1.光敏二极管光敏二极管在电路中一般是处于反向工作状态暗电流、光电流（光照越强，光电流？）2.光敏三极管基极无引出线，集电极相对于发射极为正电压当光照射在集电结上时,就会在结附近产生电子-空穴对,从而形成光电流,相当于三极管的基极电流。因此集电极电流是光生电流的β倍,所以光敏晶体管有放大作用。光电池编辑一个大面积的PN节，光照下产生的电子－空穴对向两级扩散，形成与光照强度有关的电动势。耦合器件编辑1.光电耦合器2.光电开关CCD编辑结构：MOS电容器→光敏元或像素；MOS阵列→CCD器件原理：如图所示[1]：分类编辑基于外光电效应的光电敏感器件有光电管和光电倍增管。基于光电导效应的有光敏电阻。基于势垒效应的有光电二极管和光电三极管(见半导体光敏元件)。基于侧向光电效应的有反转光敏二极管。光电式传感器还可按信号形式分为模拟式光电传感器(见位移传感器)和数字式光电传感器（见转速传感器、光栅式传感器、数字式传感器）。光电式传感器还有光纤传感器、固体图像传感器等。发展状况编辑1839年A.E.贝可勒尔发现当光线落在浸没于电介液中的两个金属电极上，它们之间就产生电势，后来称这种现象为光生伏***应。1873年W.***和Ch.梅伊发现硒的光电导效应。1887年H.R.赫兹发现外光电效应。基于外光电效应的光电管和光电倍增管属真空电子管或离子管器件，曾在50～60年代广泛应用，直到目前仍在某些场合继续使用。虽然早在1919年T.W.凯斯就已取得硫化TUO光导探测器的ZHUANLI权，但半导体光敏元件却是在60年代以后随着半导体技术的发展而开始迅速发展的。在此期间各种光电材料都得到了***的研究和广泛的应用。它们的结构有单晶和多晶薄膜的，也有非晶的，它们的成分有元素半导体的和化合物半导体的，也有多元混晶的。其中***重要的两种是硅和碲镉***。硅的原料丰富,工艺成熟,是制造从近红外到紫外波段光电器件的优良材料。碲镉***是碲化***和***的混晶，是优良的红外光敏材料。通过对光电效应和器件原理的研究已发展了多种光电器件（如光敏电阻、光电二极管、光电三极管、场效应光电管、雪崩光电二极管、电荷耦合器件等），适用于不同的场合。光电式传感器的制造工艺也随薄膜工艺、平面工艺和大规模集成电路技术的发展而达到很高的水平，并使产品的成本大为降低。被称为新一代摄像器件的聚焦平面集成光敏阵列正在取代传统的扫描摄像系统。光电式传感器的***XIN发展方向是采用有机化学汽相沉积、分子束外延、单分子膜生长等新技术和异质结等新工艺。光电式传感器的应用领域已扩大到纺织、造纸、印刷、***、环境保护等领域。在红外探测、辐射测量、光纤通信，自动控制等传统应用领域的研究也有新发展。例如，硅光电二极管自校准技术的提出为光辐射的***测量提供了一种很有前途的新方法。美国压电公司（PCB公司）简介：PCB成立于1967年，总部位于美国纽约州的布法罗市。PCB公司***致力于压电测量技术的研究、开发和产品制造，是研究、开发和制造冲击、振动、力、压力、应变、扭矩、声学传感器及测量仪器的高科技公司。目前已成为***知名的传感器及动态测试仪器生产厂家，在世界各地拥有庞大的销售和服务体系。产品广泛应用于航空、航天、船舶、***、核工业、石化、水力、电力、轻工、交通和车辆等领域，产品在世界上享有盛誉。首创的ICP（即传感器内置电荷放大器）技术使得传感器的使用更加方便，并且能更好地适应环境。这些ICP技术已在当今的动态测试领域占据了主导地位，广受用户的赞赏。除了通用产品外，PCB也按用户的要求制造定制产品以满足不同应用和客户群的需要。PCB的服务理念就是：100%让客户满意！期待与您的合作！2301-01A2301-02A2302-01A2302-02A2303-01A2303-02A2304-02A2305-01A2305-02A2308-01A2308-02A2308-03A2309-01A2309-02A2309-03A2309-04A2508-01A2508-02A2508-03A2508-04A2508-05A2525-02A2525-102-03A2526-04A4102-01A4102-02A4102-03A4102-04A4102-05A4103-01A4103-02A4104-01A4104-02A4104-03A4105-01A4105-02A4105-03A4106-01A4106-02A4106-03A4107-01A4107-02A4107-03A4115A-01A4115A-03A4115A-04A4115A-02A4115A-05A4115K-01A4115K-02A4115K-03A4115K-04A4115K-05A1233-01B200B01200B02200B03200B04200B05200C20200C50201A76201A75201B01201B02201B03201B04201B05202B203B204C205C206C207C208A11208A12208A13208A14208A15208A22208A23208A24208A33208A45208C01208A35208B01208C02208B02208C03208B03208C04208B04208C05208B05209C01209C02209C11209C12210B210B20210***211B212B213B214B215B216B217B218A11218C219A05221B01221B02221B03221B04221B05222B223B224C225C227C231B232B233B234B235B236B237B260A01260A02260A03260A11260A12260A13260A31260A32260A33261A01261A02261A03261A11261A12261A136244-107-02ARH201A76RH204CW208C01/002C10W208C04/002C10W208C05/002C10240A01240A02240A03740B02RH240A01RH240A02RH240A03070A80100A02401B04410B01421A25422E01422E02422E03422E04422E05422E06422E11422E12422E13422E14422E15422E16422E20422E21422E22422E35422E36422E38422E51422E52422E53422E54422E55422E65/A422E66/A427A03442B06442C04443B01478A01478A30478B05480B21480A21480C02480E09481A481A01481A02481A03482A21482A22482A23482B11482C05482B05482C16482C15482C26482C54482C64483C05483C15483C30483C50484B02484B06485B36485B36498A498A01498A02498A03498A30682A02682A06682A71-01682A72-018120-400A8120-410A8120F-410A8120G-400A8159-0011A8159-0012A8159-0013A8159-0112A8160-01A8161-011A8162-011AT422E91/AT422E92/AT422E93/A2301-01A2301-02A2302-01A2302-02A2303-01A2303-02A2304-01A2304-02A2305-01A2305-02A2308-01A2308-02A2308-03A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